As previously announced, (April 19, 2018), dbSNP Entrez currently only house human data. In addition, the Entrez and eUtils report formats RS docsum, XML, ASN.1, FASTA, and FLAT format will no longer be available. dbSNP entrez will transition to a new single compact eSummary format. Please see here for further details. Please contact firstname.lastname@example.org if you have any comments or concerns.
Eutils for EntrezSNP
Eutils General Help : https://eutils.ncbi.nlm.nih.gov/entrez/query/static/eutils_help.html
Contact: Please contact email@example.com for technical questions regarding the Entrez retrieval system
eFetch params for EntrezSNP:
# (id=NNNNNN[,NNNN,etc]) or (query_key=NNN, where NNN - number in the history, 0 - clipboard content for current database)